A preparation method of cigarette paper with combustion-supporting and CO emission-reducing functions
A technology of cigarette paper and combustion enhancer, which is applied in special paper, textiles, papermaking, papermaking, etc. It can solve the problems of dim color of ash and high CO emissions, and achieve fast smoldering speed, reduced CO emissions, and good appearance
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preparation example Construction
[0035] In step 3) of the preparation method according to the present invention, the pure plant nano-combustible agent dispersion liquid prepared in step 2) is added to the slurry for making cigarette paper to make cigarette paper, and the consumption of pure plant nano-combustible agent is absolutely 0.01%-8% of the dry pulp mass, preferably 1-3%. If the dosage is too low, the effect will not be obvious. If the dosage is too high, the retention rate of the nanofiber combustion accelerant will be reduced, and the air permeability of the cigarette paper made will be too low, which will affect the combustion and increase the CO emission. This may be because, if the amount is too much, there will be too much negative charge in the pulp, which will make it difficult for the nano-combustion aid to stay on the pulp. A part of the loss leads to a corresponding decrease in the retention rate.
[0036] In step 4) of the preparation method according to the present invention, the pure pl...
Embodiment 1
[0040] 1 g of bleached softwood pulp was added to 50 mL of 64 wt % concentrated sulfuric acid, and reacted at 45° C. for 1 hour. After the reaction is over, put the reaction container in an ice bath to terminate the reaction, then transfer the mixed solution into a centrifuge tube, centrifuge at 8000rpm for 5min and wash it repeatedly for 6 times, then use dialysis to remove the residual acid, and prepare it after the pH value is constant. Obtain pure plant nano-combustion-supporting agent, then it is formulated into 0.6wt% dispersion liquid. On the coating machine, the dispersion liquid prepared for cigarette paper papermaking is carried out on one side (coating amount is 0.4g / m 2 ), followed by vacuum drying to obtain a modified cigarette paper product. The strength of the cigarette paper prepared by the method in this example increased from 1.09kN / m of the blank sample to 1.21kN / m, the smoldering speed of 10cm decreased from 61.25s to 49.35s, and the strength of the treate...
Embodiment 2
[0042] 1 g of bleached hardwood pulp was added to 75 mL of 80 wt % citric acid solution, and stirred and reacted at 150° C. for 3 hours. After the reaction, the reaction mixture was centrifuged at 8000 rpm for 8 min and washed with water three times repeatedly, and the washed mixture was further removed by dialysis to remove water-soluble residues. After dialysis, the solid-liquid mixture was homogenized under 60Mpa high pressure for 10 times to further improve the stability of its aqueous suspension and the uniformity of nanofibers, thereby obtaining a nanofiber combustion accelerant, which was then formulated into a 0.8wt% dispersion. On the coating machine, the dispersion liquid prepared for cigarette paper papermaking is carried out on one side (coating amount is 0.5g / m 2 ), followed by vacuum drying to obtain a modified cigarette paper product. The strength of the cigarette paper treated by the method in this example increased from 1.08kN / m of the blank sample to 1.16kN / ...
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Abstract
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